HD 27631

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HD 27631
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Horologium
Right ascension 04h 19m 45.469s[1]
Declination –41° 57′ 36.97″[1]
Apparent magnitude (V) +8.26
Characteristics
Spectral type G3IV
Astrometry
Proper motion (μ) RA: –41.29 ± 0.62[1] mas/yr
Dec.: –93.32 ± 0.61[1] mas/yr
Parallax (π) 21.98 ± 0.68[1] mas
Distance 148 ± 5 ly
(45 ± 1 pc)
Details
Mass 0.94 ± 0.04 M
Radius R
Luminosity 0.88 L
Surface gravity (log g) 4.48 ± 0.09 cgs
Temperature 5737 ± 36 K
Metallicity [Fe/H] –0.12 ± 0.05 dex
Age 4.4 ± 3.6 Gyr
Other designations
HIP 20199, CD–42 1464
Database references
SIMBAD data
Exoplanet Archive data
Extrasolar Planets
Encyclopaedia
data

HD 27631 is a G-class yellow dwarf star.

Planetary system[edit]

From 1998 to 2012, the star was under observance from "the CORALIE echelle spectrograph at La Silla Observatory".

In 2012, a long-period, wide-orbiting planet was deduced by radial velocity. This was published in November.[2]

The HD 27631 planetary system[3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >1.45 ± 0.14 MJ 3.25 ± 0.07 2208 ± 66 0.12 ± 0.06

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ^ Marmier, M. et al. (2013). "The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets". Astronomy and Astrophysics 551. A90. arXiv:1211.6444. Bibcode:2013A&A...551A..90M. doi:10.1051/0004-6361/201219639. 
  3. ^ "hd_27631_b". 


External links[edit]